Asr light I have a 93 MBZ 500SEL. The ASR light comes on when you start the car but goes off after driven 2 to 3 miles?

Hi,asr is a (acselleration skid control unit) control unit which helps when the wheele go to spin,its part of the abs(anty lock brakes)but works in revers,the asr light is normal to flash when wheeles are slipping,good luck

Mostly this problem appends on winter time. I f you take your car to the dealership you could throw your money away like many people did and the problem still not solve. I fixed mine definitely by myself and you could do it too. 1- Open the hood, Jack the vehicle. On both front tires you will see a cable that looks like a Rca jack that connect to the brakes but it's bigger than RCA jack. 2- Follow that RCA cable to the hood and on the other end you will see 2 small white wires that bring power to ASR and ABS system cut those 2 wires and you automatically disable the ASR and you solve the problem. As you know the ASR system is good for snow, it's like a 4 by 4 and you will need it later to drive safely in bad weather when there is snow. What to do next. After cutting the 2 small wires, I put 2 swiches in case I need the ASR in bad weather.One swich for ASR and the other one for ABS. when you cut one wire you connect both ends to the swich and you do the same for the second wire that you cut. The only one thing you will see is the ASR and ABS light will turn on on the dash. When driving in bad weather, open the hood and turn on the swich to enjoy the feature of the ASR.. ASR=4 by 4

Something wrong with your throttle actuator , car needs to be diagnosed at mechanic shop.

asr works in conjunction with abs.to stop a wheel it(the car)thinks is loosing grip, from spinning.By applying the brakes to the wheel that is loosing grip,so the car is applying the brake. hence the juddering. if it stops when you turn it (asr)off it must be a sensor fault.easy way is to plug in the diagnostic computer to pinpoint faulty unit. if you dont drive very enthusiastically,then turn asr off until next mot/service.get back if you need any more info ....

you most likely have a wheel speed sensor not transmitting signal. need to have abs codes scanned. the asr light is related to the abs light same problem causing both to come on

I had a similair problem on my 600SEL 93, I read many articles and they were all bad news. When I checked the transmission fluid, I found out it was under a lot of pressure but the level was fine. After that the problem was gone.

To make sure the problem will be solved, you have to replace left and right ETA's and engine wiring harnes.I had the same problem with my 1994 S600. expensive.Mercedes had wiring problems on all models from 1992- 1996 (insulation on wires would crack,and wires would short circut).

The ASR (acceleration slip regulation) light is for the ETA (electronic throttle actuator) it is a mysterious beast that controls throttle placement. I would say that you have one of two problems. Either the interior insulation of the wiring of the ETA is is crumbling or the wiring harness is disintegrating. Either fix isn't cheap although if I had to pick one I'd pick the wiring harness. It's about a third of an ETA. In short check he wiring to the ETA, look for damage or water intrusion, if nothing is found you will have to replace the ETA control.
READ THIS POST FROM A M-BENZ FORUM MEMBER ON ASR ISSUE
For two years I lived with the the ASR light coming on shortly after starting the car and had to either continue driving it in the limp home mode, or stop the car to restart it to regain normal engine operation with the ASR light out. Finally, it got so bad I simply took a chance, after discussing the problem with a reputable local indie, and bought a rebuilt ETA from Potomac German Auto and put it in. The part had a one year warranty with it and was about half the cost of a new unit from MB. There are other companies out there that rebuild these units as well. At any rate the ASR problem went away. To give you a reference point, my car had about 156,000 miles on it when I did this repair. That may or may not be significant to your situation, and I probably should have corrected this problem well before I did, but I didn't.

Try carefully topping up the brake fluid, this can happen when the level falls as the pads wear down especially when cornering

Replace the Mass Air Flow (MAF) sensor, clear the codes, and perform a throttle body alignment (TBA). You will need the dealer to do it or find someone with a VAG-COM (see www.ross-tech.com) and do it yourself.